One site said the total forces is the sum of the vectors. My homework question is "A skydiver of mass 90 kg is falling with a terminal speed of 60 ms-1. What does that mean? What is the total force ...

Okay so I have determine the velocity $v$ and displacement $x$ as functions of $t$ for a particle falling under gravity with resistance given by $mkv^2$.
I have set up the equation of motion divided ...

I'm struggling with a problem, in which I want to determine initial condition (initial velocity, and angle) given that I know my ball has to reach (final velocity, location), but I want to make sure ...

I want to calculate the actual drag force that a NACA 63-412 wing would experience at a given planform area and relative wind speed. Airfoiltools gives a drag coefficient of 0.01676 for the optimal ...

I recently heard that a parachute opens up much faster on Mars than on Earth. Why is that the case?
More specifically, during a NASA Edge TV program, one of the scientists working on parachute tests ...

I'm doing some research on how much force is required to move a typical raindrop (assuming that it is falling straight down) off to the side of X distance.
This is for a school project on creating our ...

When an airfoil is tested in a wind tunnel the speed of the wind behind the airfoil is less than speed of the wind in front of it. That means the wind loses kinetic energy. The reason for that is drag ...

After watching this video, I am interested in proving it mathematically. The problem is that how can we apply the conservation of momentum here to find the velocity of the bullet while we don't know ...

What are the sizes of the objects that could be picked up and flown by tornados, depending on the tornado's speed?
To put it another way, assuming turbulent flow and object density much higher than ...

During the last years of WW2 the Germans used ballistic missiles V-2 (with payload mass ~1,000 kg) to bombard London, from a distance about 300 km away. Suppose the British could respond by building a ...

Let some object hang by a string. So no motion since weight was counter balanced no net force. Now string is cut. Object is falling under gravity and experiences air resistance. Terminal velocity is ...

Part of the second law states that an object will accelerate in the direction of the unbalanced force.
However, I've been thinking about parachuting and skydiving a bit lately, and I know that when ...

Surface area/the cross-sectional area is greatly increased, so my thinking is it should decrease terminal velocity as well as a couple of other factors. But mass changes too (since there would be more ...

Suppose we're on the top of the Tower of Pisa (or a larger version of it) with two identical cannonballs. We heat one up (say, to 200 degrees Celsius, or some other high temperature before it starts ...

Suppose that a vehicle is traveling 60 km/h north, and the wind speed is also 60 km/h going the same direction, would there be wind resistance, and to what extent? Also, if I put my hand outside the ...

As per newton's law, unless a force is applies, moving objects will continue to move in a straight line. A satellite which speeds at around 17.5k mph would be travelling in a straight line considering ...

In a world without air, I understand they definitely would. However, with drag taken into account, I think they wouldn't. Since the drag force varies proportional to the square of speed (ignoring the ...

I have a paper plate, and I'm taping paper streamers to it. I have 0, 1, 2, 3, and 4 streamers. I tried to place the streamers at places equidistant from the next. 2mm are attached to the plate and ...

Using a $0.4\text{ m}$ cubic parachute (cruciform design with holes in the corners for stability), a drag coefficient of about $1$ is expected for Reynolds numbers about $10^4$ (velocities about $1 ...

From what I know of Newtonian Mechanics, if an object is moving at a constant velocity, the net force acting on that object is equal to zero. If there is friction, then the applied force required to ...

When a solid object moves through a fluid drag is produced. Does this drag produce heat?
I believe drag should produce heat as it is the friction between fluid and surface of object. Is this true or ...

Is there some force of friction that acts on bodies due to rotation of Earth. We all know earth is an non inertial frame. If there is some frictional force is there some way to prove it.
What i mean ...

Is there a difference between "No Air Resistance" and "Constant Air Resistance''?
Like for example if we have two identical objects with different masses and we drop them from the same height.
Will ...

I swear that in a manual on tennis published by the German Tennis Association (Deutscher Tennis Bund) it stated as fact that all things being equal a ball will move more from left to right than from ...

I'm working on investigating the effect fog has on drag. I have assumed an air density of $1.225 \frac{\text{kg}}{\text{m}^3}$ for dry air, but I don't know what value for density I could assume that ...

Now I'm doing a research on the matter similar to this thread : Terminal Velocity of identical shape/size objects
which is very self explanatory and very helpful. However in my case, the objects will ...